// VERSION: 2.3 LAST UPDATE: 11.07.2013
/* 
 * Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
 * 
 * Made by Wilq32, wilq32@gmail.com, Wroclaw, Poland, 01.2009
 * Website: http://code.google.com/p/jqueryrotate/ 
 */
define(function(require, exports, module){
	var jQuery = require('easing');
	(function($) {
		var supportedCSS,supportedCSSOrigin, styles=document.getElementsByTagName("head")[0].style,toCheck="transformProperty WebkitTransform OTransform msTransform MozTransform".split(" ");
		for (var a = 0; a < toCheck.length; a++) if (styles[toCheck[a]] !== undefined) { supportedCSS = toCheck[a]; }
		if (supportedCSS) {
			supportedCSSOrigin = supportedCSS.replace(/[tT]ransform/,"TransformOrigin");
			if (supportedCSSOrigin[0] == "T") supportedCSSOrigin[0] = "t";
		}

		// Bad eval to preven google closure to remove it from code o_O
		eval('IE = "v"=="\v"');

		jQuery.fn.extend({
			seaRotate: function(options){
				var $this = $(this),
					config = {};
				$.seaBase.run(config, options, function(config){
					$this.rotate(config);
				});
			},
			rotate:function(parameters)
			{
				if (this.length===0||typeof parameters=="undefined") return;
				if (typeof parameters=="number") parameters={angle:parameters};
				var returned=[];
				for (var i=0,i0=this.length;i<i0;i++)
				{
					var element=this.get(i);
					if (!element.Wilq32 || !element.Wilq32.PhotoEffect) {

						var paramClone = $.extend(true, {}, parameters);
						var newRotObject = new Wilq32.PhotoEffect(element,paramClone)._rootObj;

						returned.push($(newRotObject));
					}
					else {
						element.Wilq32.PhotoEffect._handleRotation(parameters);
					}
				}
				return returned;
			},
			getRotateAngle: function(){
				var ret = [];
				for (var i=0,i0=this.length;i<i0;i++)
				{
					var element=this.get(i);
					if (element.Wilq32 && element.Wilq32.PhotoEffect) {
						ret[i] = element.Wilq32.PhotoEffect._angle;
					}
				}
				return ret;
			},
			stopRotate: function(){
				for (var i=0,i0=this.length;i<i0;i++)
				{
					var element=this.get(i);
					if (element.Wilq32 && element.Wilq32.PhotoEffect) {
						clearTimeout(element.Wilq32.PhotoEffect._timer);
					}
				}
			}
		});

		// Library agnostic interface

		Wilq32=window.Wilq32||{};
		Wilq32.PhotoEffect=(function(){

			if (supportedCSS) {
				return function(img,parameters){
					img.Wilq32 = {
						PhotoEffect: this
					};

					this._img = this._rootObj = this._eventObj = img;
					this._handleRotation(parameters);
				}
			} else {
				return function(img,parameters) {
					this._img = img;
					this._onLoadDelegate = [parameters];

					this._rootObj=document.createElement('span');
					this._rootObj.style.display="inline-block";
					this._rootObj.Wilq32 =
					{
						PhotoEffect: this
					};
					img.parentNode.insertBefore(this._rootObj,img);

					if (img.complete) {
						this._Loader();
					} else {
						var self=this;
						// TODO: Remove jQuery dependency
						jQuery(this._img).bind("load", function(){ self._Loader(); });
					}
				}
			}
		})();

		Wilq32.PhotoEffect.prototype = {
			_setupParameters : function (parameters){
				this._parameters = this._parameters || {};
				if (typeof this._angle !== "number") { this._angle = 0 ; }
				if (typeof parameters.angle==="number") { this._angle = parameters.angle; }
				this._parameters.animateTo = (typeof parameters.animateTo === "number") ? (parameters.animateTo) : (this._angle);

				this._parameters.step = parameters.step || this._parameters.step || null;
				this._parameters.easing = parameters.easing || this._parameters.easing || this._defaultEasing;
				this._parameters.duration = parameters.duration || this._parameters.duration || 1000;
				this._parameters.callback = parameters.callback || this._parameters.callback || this._emptyFunction;
				this._parameters.center = parameters.center || this._parameters.center || ["50%","50%"];
				if (typeof this._parameters.center[0] == "string") {
					this._rotationCenterX = (parseInt(this._parameters.center[0],10) / 100) * this._imgWidth * this._aspectW;
				} else {
					this._rotationCenterX = this._parameters.center[0];
				}
				if (typeof this._parameters.center[1] == "string") {
					this._rotationCenterY = (parseInt(this._parameters.center[1],10) / 100) * this._imgHeight * this._aspectH;
				} else {
					this._rotationCenterY = this._parameters.center[1];
				}

				if (parameters.bind && parameters.bind != this._parameters.bind) { this._BindEvents(parameters.bind); }
			},
			_emptyFunction: function(){},
			_defaultEasing: function (x, t, b, c, d) { return -c * ((t=t/d-1)*t*t*t - 1) + b },
			_handleRotation : function(parameters, dontcheck){
				if (!supportedCSS && !this._img.complete && !dontcheck) {
					this._onLoadDelegate.push(parameters);
					return;
				}
				this._setupParameters(parameters);
				if (this._angle==this._parameters.animateTo) {
					this._rotate(this._angle);
				}
				else {
					this._animateStart();
				}
			},

			_BindEvents:function(events){
				if (events && this._eventObj)
				{
					// Unbinding previous Events
					if (this._parameters.bind){
						var oldEvents = this._parameters.bind;
						for (var a in oldEvents) if (oldEvents.hasOwnProperty(a))
						// TODO: Remove jQuery dependency
							jQuery(this._eventObj).unbind(a,oldEvents[a]);
					}

					this._parameters.bind = events;
					for (var a in events) if (events.hasOwnProperty(a))
					// TODO: Remove jQuery dependency
						jQuery(this._eventObj).bind(a,events[a]);
				}
			},

			_Loader:(function()
			{
				if (IE)
					return function() {
						var width=this._img.width;
						var height=this._img.height;
						this._imgWidth = width;
						this._imgHeight = height;
						this._img.parentNode.removeChild(this._img);

						this._vimage = this.createVMLNode('image');
						this._vimage.src=this._img.src;
						this._vimage.style.height=height+"px";
						this._vimage.style.width=width+"px";
						this._vimage.style.position="absolute"; // FIXES IE PROBLEM - its only rendered if its on absolute position!
						this._vimage.style.top = "0px";
						this._vimage.style.left = "0px";
						this._aspectW = this._aspectH = 1;

						/* Group minifying a small 1px precision problem when rotating object */
						this._container = this.createVMLNode('group');
						this._container.style.width=width;
						this._container.style.height=height;
						this._container.style.position="absolute";
						this._container.style.top="0px";
						this._container.style.left="0px";
						this._container.setAttribute('coordsize',width-1+','+(height-1)); // This -1, -1 trying to fix ugly problem with small displacement on IE
						this._container.appendChild(this._vimage);

						this._rootObj.appendChild(this._container);
						this._rootObj.style.position="relative"; // FIXES IE PROBLEM
						this._rootObj.style.width=width+"px";
						this._rootObj.style.height=height+"px";
						this._rootObj.setAttribute('id',this._img.getAttribute('id'));
						this._rootObj.className=this._img.className;
						this._eventObj = this._rootObj;
						var parameters;
						while (parameters = this._onLoadDelegate.shift()) {
							this._handleRotation(parameters, true);
						}
					}
				else return function () {
					this._rootObj.setAttribute('id',this._img.getAttribute('id'));
					this._rootObj.className=this._img.className;

					this._imgWidth=this._img.naturalWidth;
					this._imgHeight=this._img.naturalHeight;
					var _widthMax=Math.sqrt((this._imgHeight)*(this._imgHeight) + (this._imgWidth) * (this._imgWidth));
					this._width = _widthMax * 3;
					this._height = _widthMax * 3;

					this._aspectW = this._img.offsetWidth/this._img.naturalWidth;
					this._aspectH = this._img.offsetHeight/this._img.naturalHeight;

					this._img.parentNode.removeChild(this._img);


					this._canvas=document.createElement('canvas');
					this._canvas.setAttribute('width',this._width);
					this._canvas.style.position="relative";
					this._canvas.style.left = -this._img.height * this._aspectW + "px";
					this._canvas.style.top = -this._img.width * this._aspectH + "px";
					this._canvas.Wilq32 = this._rootObj.Wilq32;

					this._rootObj.appendChild(this._canvas);
					this._rootObj.style.width=this._img.width*this._aspectW+"px";
					this._rootObj.style.height=this._img.height*this._aspectH+"px";
					this._eventObj = this._canvas;

					this._cnv=this._canvas.getContext('2d');
					var parameters;
					while (parameters = this._onLoadDelegate.shift()) {
						this._handleRotation(parameters, true);
					}
				}
			})(),

			_animateStart:function()
			{
				if (this._timer) {
					clearTimeout(this._timer);
				}
				this._animateStartTime = +new Date;
				this._animateStartAngle = this._angle;
				this._animate();
			},
			_animate:function()
			{
				var actualTime = +new Date;
				var checkEnd = actualTime - this._animateStartTime > this._parameters.duration;

				// TODO: Bug for animatedGif for static rotation ? (to test)
				if (checkEnd && !this._parameters.animatedGif)
				{
					clearTimeout(this._timer);
				}
				else
				{
					if (this._canvas||this._vimage||this._img) {
						var angle = this._parameters.easing(0, actualTime - this._animateStartTime, this._animateStartAngle, this._parameters.animateTo - this._animateStartAngle, this._parameters.duration);
						this._rotate((~~(angle*10))/10);
					}
					if (this._parameters.step) {
						this._parameters.step(this._angle);
					}
					var self = this;
					this._timer = setTimeout(function()
					{
						self._animate.call(self);
					}, 10);
				}

				// To fix Bug that prevents using recursive function in callback I moved this function to back
				if (this._parameters.callback && checkEnd){
					this._angle = this._parameters.animateTo;
					this._rotate(this._angle);
					this._parameters.callback.call(this._rootObj);
				}
			},

			_rotate : (function()
			{
				var rad = Math.PI/180;
				if (IE)
					return function(angle)
					{
						this._angle = angle;
						this._container.style.rotation=(angle%360)+"deg";
						this._vimage.style.top = -(this._rotationCenterY - this._imgHeight/2) + "px";
						this._vimage.style.left = -(this._rotationCenterX - this._imgWidth/2) + "px";
						this._container.style.top = this._rotationCenterY - this._imgHeight/2 + "px";
						this._container.style.left = this._rotationCenterX - this._imgWidth/2 + "px";

					}
				else if (supportedCSS)
					return function(angle){
						this._angle = angle;
						this._img.style[supportedCSS]="rotate("+(angle%360)+"deg)";
						this._img.style[supportedCSSOrigin]=this._parameters.center.join(" ");
					}
				else
					return function(angle)
					{
						this._angle = angle;
						angle=(angle%360)* rad;
						// clear canvas
						this._canvas.width = this._width;//+this._widthAdd;
						this._canvas.height = this._height;//+this._heightAdd;

						// REMEMBER: all drawings are read from backwards.. so first function is translate, then rotate, then translate, translate..
						this._cnv.translate(this._imgWidth*this._aspectW,this._imgHeight*this._aspectH);	// at least center image on screen
						this._cnv.translate(this._rotationCenterX,this._rotationCenterY);			// we move image back to its orginal
						this._cnv.rotate(angle);										// rotate image
						this._cnv.translate(-this._rotationCenterX,-this._rotationCenterY);		// move image to its center, so we can rotate around its center
						this._cnv.scale(this._aspectW,this._aspectH); // SCALE - if needed ;)
						this._cnv.drawImage(this._img, 0, 0);							// First - we draw image
					}

			})()
		}

		if (IE)
		{
			Wilq32.PhotoEffect.prototype.createVMLNode=(function(){
				document.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)");
				try {
					!document.namespaces.rvml && document.namespaces.add("rvml", "urn:schemas-microsoft-com:vml");
					return function (tagName) {
						return document.createElement('<rvml:' + tagName + ' class="rvml">');
					};
				} catch (e) {
					return function (tagName) {
						return document.createElement('<' + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
					};
				}
			})();
		}

	})(jQuery);
	return jQuery;
});